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Financial : Although the Connexions site makes it possible for you to download a PDF file for thismodule at no charge, and also makes it possible for you to purchase a pre-printed version of the PDF file, you should beaware that some of the HTML elements in this module may not translate well into PDF.

I also want you to know that, I receive no financial compensation from the Connexions website even if you purchase the PDF version of the module.

In the past, unknown individuals have copied my modules from cnx.org, converted them to Kindle books, and placed them for sale on Amazon.com showing me as the author. Ineither receive compensation for those sales nor do I know who does receive compensation. If you purchase such a book, please beaware that it is a copy of a module that is freely available on cnx.org and that it was made and published withoutmy prior knowledge.

Affiliation : I am a professor of Computer Information Technology at Austin Community College in Austin, TX.

Complete program listing

A complete listing of the program follows.

Listing 1 . Source code for FirstProgram.

/* Begin block comment This is the beginning of a block comment in Java.Everything in this block comment is for human consumption and will be ignored by the Java compiler.File: FirstProgram.java Copyright 2012, R.G. BaldwinThis program is designed to illustrate the most common forms of the three pillars of procedural programming inJava code: sequenceselection loopThe program also illustrates calling a method, passing a parameter to the method, and receiving a returnedvalue from the method. Assuming that the Java Development Kit (JDK) is properlyinstalled on your computer, do the following to compile and run this program.1. Copy this program into a file named FirstProgram.java and store the file in a folder on your disk.2. Open a command-line window in the folder containing the file.3. Type the following command to compile the program: javac FirstProgram.java4.4. Type the following command to run the program: java FirstProgramAny text that begins with // in the following program code is a comment. The compiler will ignore everythingfrom the // to the end of the line. The compiler also ignores blank lines.Note that this program was designed to illustrate the concepts while being as non-cryptic as possible.The program should display the following text on the screen except that the time will be different each timethat you run the program. value in = 5Odd time = 1353849164875 countA = 0countA = 1 countA = 2countB = 0 countB = 1countB = 2 value out = 10End block comment ***************************************/ //The actual program begins with the next line.import java.util.*; class FirstProgram{//The program consists of a sequence of statements.//The next statement is the beginning of the main // method, which is required in all Java applications.public static void main(String[] args){//Program execution begins here.//Declare and initialize a variable. int var = 5;//Statements of the following type display// information on the screen System.out.println("value in = " + var);//Call a method and pass a parameter to the method.//Save the returned value in var, replacing what // was previously stored there.//Control is passed to the method named firstMethod. var = firstMethod(var);//Control has returned from the method named // firstMethod.System.out.println("value out = " + var);//Program execution ends here }//end main method/****visual separator comment**************************/public static int firstMethod(int inData){//Control is now in this method.//Illustrate selection //Get the elapsed time in milliseconds since Jan 1970.long time = new Date().getTime();//Select even or odd time and display the results if(time % 2 == 0){System.out.println("Even time = " + time); }else{System.out.println("Odd time = " + time); }//end if-else selection//Illustrate a while loopint countA = 0; while(countA<3){ System.out.println("countA = " + countA);//Increment the counter countA = countA + 1;}//end while loop//Illustrate a for loop for(int countB = 0; countB<3; countB = countB + 1){ System.out.println("countB = " + countB);}//end for loop//Illustrate returning a value from a method and // returning control back to the calling method.return 2*inData; }//end firstMethod}//end class FirstProgram//The program ends with the previous line.


Questions & Answers

I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
How can I make nanorobot?
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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